CN113060142A - Range extender control method and device and range extender electric vehicle - Google Patents
Range extender control method and device and range extender electric vehicle Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/20—Reducing vibrations in the driveline
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/20—Reducing vibrations in the driveline
- B60W2030/206—Reducing vibrations in the driveline related or induced by the engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The application discloses a range extender control method and device and a range extender electric vehicle, and relates to the technical field of range extender electric vehicles. The method of the present application comprises: sending an idle speed instruction to a three-cylinder engine, wherein the idle speed instruction is used for indicating the three-cylinder engine to operate under an idle working condition; acquiring output torque of the three-cylinder engine; determining a final target torque corresponding to the generator according to the output torque; and controlling the generator to output the final target torque when the three-cylinder engine runs under an idle working condition. The method and the device are suitable for inhibiting the three-cylinder engine from shaking under the idling working condition.
Description
Technical Field
The invention relates to the technical field of range-extended electric vehicles, in particular to a range extender control method and device and a range-extended electric vehicle.
Background
In recent years, with the continuous development of society, the living standard of people is continuously improved, the demand of people for automobiles is more and more, and electric automobiles powered by electric energy are produced due to the fact that the energy shortage and the environmental pollution problem caused by traditional automobiles are more and more serious. Although the pure electric vehicle has the characteristics of zero emission, zero pollution and the like, the energy density of the power battery cannot be effectively improved at the present stage, so that the endurance mileage of the pure electric vehicle cannot meet the requirements of people, and the occurrence of hybrid vehicles (including extended range electric vehicles) solves the problem to a certain extent. The range extender of the range-extending electric automobile comprises an engine and a generator, and the range extender can be a three-cylinder engine; because the actual output torque of the three-cylinder engine has natural unbalance in the running process of the three-cylinder engine, the three-cylinder engine can shake in the running process; when the three-cylinder engine runs under the idle working condition, the generated vibration can cause the gear in the speed reducer to generate knocking sound, and further the user experience of a driver and passengers can be influenced.
At present, hardware devices such as a balance shaft, a dual-mass flywheel or a diaphragm spring are usually added to inhibit the three-cylinder engine from shaking under the idle working condition, so that knocking sound emitted by a gear of a speed reducer is reduced; however, the addition of hardware equipment increases the manufacturing cost of the extended range electric vehicle to a certain extent; in addition, the added hardware device occupies the internal space of the extended range electric vehicle, thereby affecting the structural design of the extended range electric vehicle. Therefore, the method for inhibiting the three-cylinder engine from generating the shake under the idle working condition by adding the hardware equipment has higher cost and lower flexibility.
Disclosure of Invention
The embodiment of the application provides a range extender control method and device and a range extender electric automobile, and mainly aims to inhibit a three-cylinder engine from shaking under an idling working condition, so that knocking sound emitted by a speed reducer gear is reduced, and the user experience of a driver and passengers is improved.
In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:
in a first aspect, the present application provides a range extender control method, including:
sending an idle speed instruction to a three-cylinder engine, wherein the idle speed instruction is used for indicating the three-cylinder engine to operate under an idle working condition;
acquiring output torque of the three-cylinder engine;
determining a final target torque corresponding to the generator according to the output torque;
and controlling the generator to output the final target torque when the three-cylinder engine runs under an idle working condition.
Optionally, the determining a final target torque corresponding to the generator according to the output torque includes:
generating a plurality of control commands according to the output torque, wherein each control command comprises a target torque, and the target torques contained in the control commands are different from each other;
sequentially sending a plurality of control instructions to a generator controller, wherein the control instructions are used for instructing the generator controller to control the generator to sequentially output a plurality of target torques;
obtaining a plurality of knocking sounds, wherein the knocking sounds are generated by a gear of a speed reducer when the generator sequentially outputs a plurality of target torques;
and determining the target torque corresponding to the knocking sound with the smallest volume in the plurality of knocking sounds as the final target torque.
Optionally, the generating a plurality of control commands according to the output torque includes: the plurality of control instructions specifically include a plurality of first control instructions or a plurality of second control instructions;
when the output torque is larger than or equal to a preset torque threshold value, generating a plurality of first control instructions according to a first target torque range, wherein each first control instruction comprises a first target torque, the first target torques contained in the plurality of first control instructions are different from each other, and the values of the plurality of first target torques are negative values;
and when the output torque is smaller than the preset torque threshold value, generating a plurality of second control instructions according to a second target torque range, wherein each second control instruction comprises a second target torque, the second target torques contained in the plurality of second control instructions are different from each other, and the values of the plurality of second target torques are positive values.
Optionally, the generating a plurality of first control commands according to the first target torque range includes:
selecting a plurality of first target torques within the first target torque range;
a plurality of the first control commands are generated according to a plurality of the first target torques.
Optionally, the generating a plurality of second control commands according to the second target torque range includes:
selecting a plurality of second target torques in the second target torque range;
and generating a plurality of second control commands according to the plurality of second target torques.
Optionally, the controlling the generator to output the final target torque when the three-cylinder engine is operated in an idle condition includes:
and sending a third control command carrying the final target torque to a generator controller, wherein the third control command is used for instructing the generator controller to control the generator to output the final target torque.
Optionally, the tapping sound is a tapping sound within a preset fixed order range.
In a second aspect, the present application also provides a range extender control device, comprising:
the device comprises a sending unit, a judging unit and a judging unit, wherein the sending unit is used for sending an idling instruction to a three-cylinder engine, and the idling instruction is used for indicating the three-cylinder engine to operate under an idling working condition;
an acquisition unit for acquiring an output torque of the three-cylinder engine;
the determining unit is used for determining a final target torque corresponding to the generator according to the output torque;
and the control unit is used for controlling the generator to output the final target torque when the three-cylinder engine runs under the idle working condition.
Optionally, the determining unit includes:
the generating module is used for generating a plurality of control commands according to the output torque, wherein each control command comprises a target torque, and the target torques contained in the control commands are different from each other;
the sending module is used for sending a plurality of control instructions to a generator controller in sequence, and the control instructions are used for instructing the generator controller to control the generator to output a plurality of target torques in sequence;
the acquisition module is used for acquiring a plurality of knocking sounds, and the knocking sounds are generated by a gear of the speed reducer when the generator sequentially outputs a plurality of target torques;
and the determining module is used for determining the target torque corresponding to the knocking sound with the minimum volume in the plurality of knocking sounds as the final target torque.
Optionally, the generating module includes: the plurality of control instructions specifically include a plurality of first control instructions or a plurality of second control instructions;
the first generation submodule is used for generating a plurality of first control instructions according to a first target torque range when the output torque is larger than or equal to a preset torque threshold, wherein each first control instruction comprises a first target torque, the first target torques contained in the plurality of first control instructions are different from each other, and the values of the plurality of first target torques are negative values;
and the second generation submodule is used for generating a plurality of second control instructions according to a second target torque range when the output torque is smaller than the preset torque threshold, wherein each second control instruction comprises a second target torque, the second target torques contained in the plurality of second control instructions are different from each other, and the values of the plurality of second target torques are positive values.
Optionally, the first generating submodule is specifically configured to select a plurality of first target torques within the first target torque range; a plurality of the first control commands are generated according to a plurality of the first target torques.
Optionally, the second generating submodule is specifically configured to select a plurality of second target torques within the second target torque range; and generating a plurality of second control commands according to the plurality of second target torques.
Optionally, the control unit is specifically configured to send a third control command carrying the final target torque to a generator controller, where the third control command is used to instruct the generator controller to control the generator to output the final target torque.
Optionally, the tapping sound is a tapping sound within a preset fixed order range.
In a third aspect, embodiments of the present application provide an extended range electric vehicle, including: the range extender control device of the second aspect.
In a fourth aspect, embodiments of the present application provide a range extender control device, the device comprising a storage medium; and one or more processors, the storage medium coupled with the processors, the processors configured to execute program instructions stored in the storage medium; the program instructions when executed perform the range extender control method of the first aspect.
By means of the technical scheme, the technical scheme provided by the application at least has the following advantages:
the application provides a range extender control method and device and a range extender electric vehicle, wherein after the range extender is started, when the requirement for controlling a three-cylinder engine to enter an idling working condition to operate is determined after the range extender is started, a vehicle control unit sends an idling instruction to the three-cylinder engine, so that the three-cylinder engine operates in the idling working condition after receiving the idling instruction; after the three-cylinder engine runs under an idling working condition, the vehicle control unit acquires the output torque of the three-cylinder engine at the current moment and determines the final target torque corresponding to the generator according to the output torque of the three-cylinder engine; in the driving process, when the three-cylinder engine runs under the idle working condition, the generator is controlled to output the final target torque, so that the three-cylinder engine is restrained from shaking, knocking sound emitted by a reducer gear is reduced, and user experience of a driver and passengers is improved.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
fig. 1 is a flowchart illustrating a method for controlling a range extender according to an embodiment of the present disclosure;
FIG. 2 is a flow chart illustrating another method for controlling a range extender provided by an embodiment of the present application;
fig. 3 is a block diagram illustrating a control apparatus of a range extender provided in an embodiment of the present application;
fig. 4 shows a block diagram of another range extender control device provided in the embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
An embodiment of the present application provides a method for controlling a range extender, as shown in fig. 1, the method includes:
101. and sending an idle speed command to the three-cylinder engine.
The range extender of the range-extending electric automobile comprises a three-cylinder engine and a generator. Wherein the idle speed instruction is used for instructing the three-cylinder engine to operate under an idle speed condition. In the embodiment of the present application, the execution subject in each step is a Vehicle Control Unit (VCU) of the extended range electric Vehicle.
In some specific scenes, after the range extender is started, the three-cylinder engine in the range extender is controlled to enter an idle working condition (namely, the three-cylinder engine automatically controls the three-cylinder engine to operate at a preset fixed rotating speed), however, in the process that the three-cylinder engine operates under the idle working condition, the torque actually output by the three-cylinder engine has natural unbalance, the three-cylinder engine shakes, and therefore the gear in the speed reducer makes a knocking sound, and user experience of a driver and passengers is affected. Wherein, the specific scenario may be, but is not limited to: the generator in the range extender only needs very little power generation, the catalyst needs to be heated after the three-cylinder engine is started, and the like.
In the embodiment of the application, after the range extender is started, when it is determined that a requirement for controlling the three-cylinder engine to enter the idling working condition to operate exists after the range extender is started at this time, the vehicle control unit needs to firstly send the idling instruction to the three-cylinder engine, so that the three-cylinder engine operates under the idling working condition after receiving the idling instruction; in the process, the vehicle control unit can determine how to restrain the three-cylinder engine from shaking, and then, when the three-cylinder engine runs under the idling working condition, the three-cylinder engine can be effectively restrained from shaking.
102. The output torque of the three-cylinder engine is obtained.
In the embodiment of the application, the vehicle control unit can obtain the output torque of the three-cylinder engine at the current moment after the three-cylinder engine runs under the idling working condition.
Specifically, the engine controller can obtain the torque value output by the three-cylinder engine in real time, so that the vehicle control unit can obtain the output torque of the three-cylinder engine through the engine controller, but is not limited thereto.
103. And determining the final target torque corresponding to the generator according to the output torque.
In the embodiment of the application, after the vehicle control unit obtains the output torque of the three-cylinder engine, it is necessary to determine the final target torque corresponding to the generator according to the output torque of the three-cylinder engine, so that, after that, when the three-cylinder engine is operated under an idle condition, the generator is controlled to output the final target torque to suppress the three-cylinder engine from shaking.
Specifically, in this step, when the output torque of the three-cylinder engine is greater than or equal to the preset torque threshold, any one negative torque value may be determined as the final target torque, so that after the generator is controlled to output the final target torque, the generator may provide a resistance for the three-cylinder engine, that is, a load is added to the three-cylinder engine, thereby suppressing the three-cylinder engine from shaking; when the output torque of the three-cylinder engine is smaller than the preset torque threshold, any one positive torque value can be determined as the final target torque, so that after the generator is controlled to output the final target torque, the generator can provide an assisting force for the three-cylinder engine, namely, the generator reversely drags the three-cylinder engine to operate, and the three-cylinder engine can be restrained from shaking.
104. And controlling the generator to output the final target torque when the three-cylinder engine runs under the idle working condition.
In the embodiment of the application, after the vehicle control unit determines the final target torque corresponding to the generator according to the output torque of the three-cylinder engine, the generator can be controlled to output the final target torque when the three-cylinder engine is in idle running in the driving process, so that the three-cylinder engine is inhibited from shaking, knocking sound emitted by a reducer gear is reduced, and user experience of a driver and passengers is improved. Wherein, this driving process specifically means: after the vehicle control unit determines the final target torque corresponding to the generator according to the output torque of the three-cylinder engine, the vehicle control unit stops working until the extended-range electric vehicle stops working.
It should be noted that, in the practical application process, in the current driving process, when the range extender is closed and is started again, the method recorded by the foregoing 101-104 may be adopted again to determine the final target torque corresponding to the generator, and in the starting process of the current range extender, whenever the three-cylinder engine is operated under the idle operating condition, the generator is controlled to output the newly determined final target torque, so as to suppress the three-cylinder engine from shaking, which is not specifically limited in this embodiment of the present application.
The embodiment of the application provides a range extender control method, and after the range extender is started, when the range extender is determined to be started at this time and a requirement for controlling a three-cylinder engine to enter an idling working condition to operate exists, a vehicle control unit sends an idling instruction to the three-cylinder engine, so that the three-cylinder engine operates in the idling working condition after receiving the idling instruction; after the three-cylinder engine runs under an idling working condition, the vehicle control unit acquires the output torque of the three-cylinder engine at the current moment and determines the final target torque corresponding to the generator according to the output torque of the three-cylinder engine; in the driving process, when the three-cylinder engine runs under the idle working condition, the generator is controlled to output the final target torque, so that the three-cylinder engine is restrained from shaking, knocking sound emitted by a reducer gear is reduced, and user experience of a driver and passengers is improved.
For the following description, in order to explain in more detail, an embodiment of the present application provides another range extender control method, specifically as shown in fig. 2, the method includes:
201. and sending an idle speed command to the three-cylinder engine.
In step 201, the description of the corresponding part in fig. 1 may be referred to for sending the idle instruction to the three-cylinder engine, and details of the embodiment of the present application will not be described here again.
202. The output torque of the three-cylinder engine is obtained.
In step 202, the description of the corresponding part in fig. 1 may be referred to for obtaining the output torque of the three-cylinder engine, and the description of the embodiment of the present application will not be repeated here.
203. And determining the final target torque corresponding to the generator according to the output torque.
In the embodiment of the application, after the vehicle control unit obtains the output torque of the three-cylinder engine, it is necessary to determine the final target torque corresponding to the generator according to the output torque of the three-cylinder engine, so that, after that, when the three-cylinder engine is operated under an idle condition, the generator is controlled to output the final target torque to suppress the three-cylinder engine from shaking. The following will describe in detail how the vehicle control unit determines the final target torque corresponding to the generator according to the output torque of the three-cylinder engine.
(1) A plurality of control commands are generated according to the output torque of the three-cylinder engine, wherein each control command comprises a target torque, and the target torques contained in the plurality of control commands are different from each other.
Specifically, in this step, the vehicle control unit may generate a plurality of control commands according to the output torque of the three-cylinder engine in the following manner:
the plurality of control instructions specifically include a plurality of first control instructions or a plurality of second control instructions.
When the output torque of the three-cylinder engine is greater than or equal to a preset torque threshold value, generating a plurality of first control instructions according to the first target torque range, wherein the preset torque threshold value can be but is not limited to: 20Nm, 25Nm, 30Nm, etc., and the first target torque range may be, but is not limited to: [ -10Nm, -1Nm ], [ -15Nm, -6Nm ], and so on, each first control command includes a first target torque, the first target torques included in the first control commands are different from each other, and values of the first target torques are negative values, wherein a specific process of generating the first control commands according to the first target torque range may be: selecting a plurality of first target torques within a first target torque range, and generating a plurality of first control instructions according to the plurality of first target torques, that is, generating a first control instruction corresponding to each first target torque according to the plurality of first target torques, so as to obtain the plurality of first control instructions, where the vehicle control unit may select the plurality of first target torques within the first target torque range in any manner, which is not specifically limited in the embodiment of the present application;
when the output torque of the three-cylinder engine is smaller than a preset torque threshold value, generating a plurality of second control instructions according to a second target torque range, wherein the preset torque threshold value can be but is not limited to: 20Nm, 25Nm, 30Nm, etc., and the second target torque range may be, but is not limited to: [1Nm, 10Nm ], [1Nm, 15Nm ], [6Nm, 15Nm ], and so on, each second control command includes a second target torque, the second target torques included in the plurality of second control commands are different from each other, and values of the plurality of second target torques are positive values, wherein a specific process of generating the plurality of second control commands according to the second target torque range may be: selecting a plurality of second target torques within the second target torque range, and then generating a plurality of second control instructions according to the plurality of second target torques, that is, generating a second control instruction corresponding to each second target torque according to the plurality of second target torques, so as to obtain the plurality of second control instructions, where the vehicle control unit may select the plurality of second target torques within the second target torque range in any manner, which is not specifically limited in the embodiment of the present invention.
(2) And sequentially sending a plurality of control instructions (a plurality of first control instructions or a plurality of second control instructions) to a generator controller corresponding to the generator, wherein the plurality of control instructions are used for instructing the generator controller to control the generator to sequentially output a plurality of target torques (namely, the plurality of first control instructions are used for instructing the generator controller to control the generator to sequentially output a plurality of first target torques, and the plurality of second control instructions are used for instructing the generator controller to control the generator to sequentially output a plurality of second target torques). After receiving the plurality of control commands (the plurality of first control commands or the plurality of second control commands), the generator controller controls the generator to sequentially output the plurality of target torques according to the plurality of control commands (the generator is controlled to sequentially output the plurality of first target torques according to the plurality of first control commands, or the generator is controlled to sequentially output the plurality of second target torques according to the plurality of second control commands).
(3) After the generator sequentially outputs a plurality of target torques (a plurality of first target torques or a plurality of second target torques), a plurality of knocking sounds are obtained, wherein the obtained knocking sounds are generated by the reducer gear when the generator sequentially outputs a plurality of target torques (a plurality of first target torques or a plurality of second target torques). Specifically, in this step, can acquire a plurality of sounds of strikeing through presetting vibration sensor, wherein, presetting vibration sensor and setting up side on reduction gear housing in advance, a plurality of sounds of strikeing that obtain are: knocking sound of a reducer gear within a preset fixed order range;
(4) and determining the target torque corresponding to the tapping sound with the minimum volume in the obtained multiple tapping sounds as the final target torque.
204. And when the three-cylinder engine is operated under the idle working condition, sending a third control command carrying the final target torque to the generator controller.
Wherein the third control command is for instructing the generator controller to control the generator to output the final target torque.
In the embodiment of the application, after the final target torque corresponding to the generator is determined according to the output torque of the three-cylinder engine, in the driving process, whenever the three-cylinder engine runs under an idle working condition, the vehicle control unit sends a third control command carrying the final target torque to the generator controller, so that the generator controller controls the generator to output the final target torque according to the third control command after receiving the third control command, thereby inhibiting the three-cylinder engine from shaking, further reducing the knocking sound emitted by the speed reducer gear, and improving the user experience of a driver and passengers.
Further, as an implementation of the method shown in fig. 1 and fig. 2, another embodiment of the present application further provides a range extender control device. The embodiment of the apparatus corresponds to the embodiment of the method, and for convenience of reading, details in the embodiment of the apparatus are not repeated one by one, but it should be clear that the apparatus in the embodiment can correspondingly implement all the contents in the embodiment of the method. The device is applied to and restraines that the three-cylinder engine produces the shake under the idle operating mode to reduce the knock sound that the reduction gear sent, and then promote driver and passenger's user experience, specifically as shown in figure 3, the device includes:
the sending unit 31 is configured to send an idle instruction to the three-cylinder engine, where the idle instruction is used to instruct the three-cylinder engine to operate under an idle condition;
an acquisition unit 32 for acquiring output torque of the three-cylinder engine;
the determining unit 33 is used for determining a final target torque corresponding to the generator according to the output torque;
and the control unit 34 is used for controlling the generator to output the final target torque when the three-cylinder engine is operated under the idle working condition.
Further, as shown in fig. 4, the determination unit 33 includes:
a generating module 331, configured to generate a plurality of control commands according to the output torque, where each of the control commands includes a target torque, and the target torques included in the plurality of control commands are different from each other;
a sending module 332, configured to send a plurality of control instructions to a generator controller in sequence, where the plurality of control instructions are used to instruct the generator controller to control the generator to output a plurality of target torques in sequence;
an obtaining module 333, configured to obtain multiple knocking sounds, where the multiple knocking sounds are generated by a reducer gear when the generator sequentially outputs multiple target torques;
the determining module 334 is configured to determine a target torque corresponding to a tapping sound with a smallest volume in the plurality of tapping sounds as the final target torque.
Further, as shown in fig. 4, the generating module 331 includes: the plurality of control instructions specifically include a plurality of first control instructions or a plurality of second control instructions;
the first generating submodule 3311 is configured to generate, when the output torque is greater than or equal to a preset torque threshold, a plurality of first control commands according to a first target torque range, where each of the first control commands includes one first target torque, the first target torques included in the plurality of first control commands are different from each other, and values of the plurality of first target torques are negative values;
the second generating submodule 3312 is configured to generate, when the output torque is smaller than the preset torque threshold, a plurality of second control commands according to a second target torque range, where each of the second control commands includes a second target torque, the second target torques included in the plurality of second control commands are different from each other, and values of the plurality of second target torques are positive values.
Further, as shown in fig. 4, a first generating sub-module 3311 is specifically configured to select a plurality of the first target torques within the first target torque range; a plurality of the first control commands are generated according to a plurality of the first target torques.
Further, as shown in fig. 4, a second generating submodule 3312 is specifically configured to select a plurality of second target torques within the second target torque range; and generating a plurality of second control commands according to the plurality of second target torques.
Further, as shown in fig. 4, the control unit 34 is specifically configured to send a third control command carrying the final target torque to the generator controller, where the third control command is used to instruct the generator controller to control the generator to output the final target torque.
Further, as shown in fig. 4, the tap sound is a tap sound within a preset fixed order range.
The embodiment of the application provides a range extender control method and device and a range extender electric vehicle, and the range extender control method and device can be used for sending an idling instruction to a three-cylinder engine by a vehicle control unit after the range extender is started and when the requirement for controlling the three-cylinder engine to enter the idling working condition to operate is determined after the range extender is started at this time, so that the three-cylinder engine can operate in the idling working condition after receiving the idling instruction; after the three-cylinder engine runs under an idling working condition, the vehicle control unit acquires the output torque of the three-cylinder engine at the current moment and determines the final target torque corresponding to the generator according to the output torque of the three-cylinder engine; in the driving process, when the three-cylinder engine runs under the idle working condition, the generator is controlled to output the final target torque, so that the three-cylinder engine is restrained from shaking, knocking sound emitted by a reducer gear is reduced, and user experience of a driver and passengers is improved.
The range extender control device comprises a processor and a memory, wherein the sending unit, the acquiring unit, the determining unit, the control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the three-cylinder engine is restrained from shaking under the idle working condition by adjusting the kernel parameters, so that the knocking sound emitted by the reducer gear is reduced, and the user experience of a driver and passengers is further improved.
The embodiment of the application also provides an extended range electric automobile which comprises the extended range controller control device.
The embodiment of the application also provides a range extender control device, which comprises a storage medium; and one or more processors, the storage medium coupled with the processors, the processors configured to execute program instructions stored in the storage medium; and when the program instruction runs, the range extender control method is executed.
The embodiment of the application provides equipment, the equipment comprises a processor, a memory and a program which is stored on the memory and can run on the processor, and the following steps are realized when the processor executes the program:
sending an idle speed instruction to a three-cylinder engine, wherein the idle speed instruction is used for indicating the three-cylinder engine to operate under an idle working condition;
acquiring output torque of the three-cylinder engine;
determining a final target torque corresponding to the generator according to the output torque;
and controlling the generator to output the final target torque when the three-cylinder engine runs under an idle working condition.
Further, the determining a final target torque corresponding to the generator according to the output torque includes:
generating a plurality of control commands according to the output torque, wherein each control command comprises a target torque, and the target torques contained in the control commands are different from each other;
sequentially sending a plurality of control instructions to a generator controller, wherein the control instructions are used for instructing the generator controller to control the generator to sequentially output a plurality of target torques;
obtaining a plurality of knocking sounds, wherein the knocking sounds are generated by a gear of a speed reducer when the generator sequentially outputs a plurality of target torques;
and determining the target torque corresponding to the knocking sound with the smallest volume in the plurality of knocking sounds as the final target torque.
Further, the generating a plurality of control commands according to the output torque includes: the plurality of control instructions specifically include a plurality of first control instructions or a plurality of second control instructions;
when the output torque is larger than or equal to a preset torque threshold value, generating a plurality of first control instructions according to a first target torque range, wherein each first control instruction comprises a first target torque, the first target torques contained in the plurality of first control instructions are different from each other, and the values of the plurality of first target torques are negative values;
and when the output torque is smaller than the preset torque threshold value, generating a plurality of second control instructions according to a second target torque range, wherein each second control instruction comprises a second target torque, the second target torques contained in the plurality of second control instructions are different from each other, and the values of the plurality of second target torques are positive values.
Further, the generating a plurality of first control commands according to the first target torque range includes:
selecting a plurality of first target torques within the first target torque range;
a plurality of the first control commands are generated according to a plurality of the first target torques.
Further, the generating a plurality of second control commands according to the second target torque range includes:
selecting a plurality of second target torques in the second target torque range;
and generating a plurality of second control commands according to the plurality of second target torques.
Further, the controlling the generator to output the final target torque when the three-cylinder engine is operated in the idle condition includes:
and sending a third control command carrying the final target torque to a generator controller, wherein the third control command is used for instructing the generator controller to control the generator to output the final target torque.
Further, the knocking sound is a knocking sound within a preset fixed order range.
The present application further provides a computer program product adapted to perform program code for initializing the following method steps when executed on a data processing device: sending an idle speed instruction to a three-cylinder engine, wherein the idle speed instruction is used for indicating the three-cylinder engine to operate under an idle working condition; acquiring output torque of the three-cylinder engine; determining a final target torque corresponding to the generator according to the output torque; and controlling the generator to output the final target torque when the three-cylinder engine runs under an idle working condition.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (16)
1. A range extender control method, comprising:
sending an idle speed instruction to a three-cylinder engine, wherein the idle speed instruction is used for indicating the three-cylinder engine to operate under an idle working condition;
acquiring output torque of the three-cylinder engine;
determining a final target torque corresponding to the generator according to the output torque;
and controlling the generator to output the final target torque when the three-cylinder engine runs under an idle working condition.
2. The method of claim 1, wherein determining a final target torque for the generator based on the output torque comprises:
generating a plurality of control commands according to the output torque, wherein each control command comprises a target torque, and the target torques contained in the control commands are different from each other;
sequentially sending a plurality of control instructions to a generator controller, wherein the control instructions are used for instructing the generator controller to control the generator to sequentially output a plurality of target torques;
obtaining a plurality of knocking sounds, wherein the knocking sounds are generated by a gear of a speed reducer when the generator sequentially outputs a plurality of target torques;
and determining the target torque corresponding to the knocking sound with the smallest volume in the plurality of knocking sounds as the final target torque.
3. The method of claim 2, wherein said generating a plurality of control commands based on said output torque comprises: the plurality of control instructions specifically include a plurality of first control instructions or a plurality of second control instructions;
when the output torque is larger than or equal to a preset torque threshold value, generating a plurality of first control instructions according to a first target torque range, wherein each first control instruction comprises a first target torque, the first target torques contained in the plurality of first control instructions are different from each other, and the values of the plurality of first target torques are negative values;
and when the output torque is smaller than the preset torque threshold value, generating a plurality of second control instructions according to a second target torque range, wherein each second control instruction comprises a second target torque, the second target torques contained in the plurality of second control instructions are different from each other, and the values of the plurality of second target torques are positive values.
4. The method of claim 3, wherein generating a plurality of first control commands based on the first target torque range comprises:
selecting a plurality of first target torques within the first target torque range;
a plurality of the first control commands are generated according to a plurality of the first target torques.
5. The method of claim 3, wherein generating a second plurality of control commands based on a second target torque range comprises:
selecting a plurality of second target torques in the second target torque range;
and generating a plurality of second control commands according to the plurality of second target torques.
6. The method of claim 1, wherein the controlling the generator to output the final target torque when the three-cylinder engine is operating at an idle condition comprises:
and sending a third control command carrying the final target torque to a generator controller, wherein the third control command is used for instructing the generator controller to control the generator to output the final target torque.
7. The method of claim 2, wherein the tapping sound is a tapping sound within a preset fixed order range.
8. A range extender control device, comprising:
the device comprises a sending unit, a judging unit and a judging unit, wherein the sending unit is used for sending an idling instruction to a three-cylinder engine, and the idling instruction is used for indicating the three-cylinder engine to operate under an idling working condition;
an acquisition unit for acquiring an output torque of the three-cylinder engine;
the determining unit is used for determining a final target torque corresponding to the generator according to the output torque;
and the control unit is used for controlling the generator to output the final target torque when the three-cylinder engine runs under the idle working condition.
9. The apparatus of claim 8, wherein the determining unit comprises:
the generating module is used for generating a plurality of control commands according to the output torque, wherein each control command comprises a target torque, and the target torques contained in the control commands are different from each other;
the sending module is used for sending a plurality of control instructions to a generator controller in sequence, and the control instructions are used for instructing the generator controller to control the generator to output a plurality of target torques in sequence;
the acquisition module is used for acquiring a plurality of knocking sounds, and the knocking sounds are generated by a gear of the speed reducer when the generator sequentially outputs a plurality of target torques;
and the determining module is used for determining the target torque corresponding to the knocking sound with the minimum volume in the plurality of knocking sounds as the final target torque.
10. The apparatus of claim 9, wherein the generating module comprises: the plurality of control instructions specifically include a plurality of first control instructions or a plurality of second control instructions;
the first generation submodule is used for generating a plurality of first control instructions according to a first target torque range when the output torque is larger than or equal to a preset torque threshold, wherein each first control instruction comprises a first target torque, the first target torques contained in the plurality of first control instructions are different from each other, and the values of the plurality of first target torques are negative values;
and the second generation submodule is used for generating a plurality of second control instructions according to a second target torque range when the output torque is smaller than the preset torque threshold, wherein each second control instruction comprises a second target torque, the second target torques contained in the plurality of second control instructions are different from each other, and the values of the plurality of second target torques are positive values.
11. The apparatus of claim 10,
the first generation submodule is specifically configured to select a plurality of first target torques within the first target torque range; a plurality of the first control commands are generated according to a plurality of the first target torques.
12. The apparatus of claim 10,
the second generation submodule is specifically configured to select a plurality of second target torques within the second target torque range; and generating a plurality of second control commands according to the plurality of second target torques.
13. The apparatus of claim 8,
the control unit is specifically configured to send a third control command carrying the final target torque to a generator controller, where the third control command is used to instruct the generator controller to control the generator to output the final target torque.
14. The apparatus of claim 9, wherein the tapping sound is a tapping sound within a preset fixed order range.
15. An extended range electric vehicle, comprising:
the range extender control device of any of claims 8-14.
16. A range extender control device, comprising a storage medium; and one or more processors, the storage medium coupled with the processors, the processors configured to execute program instructions stored in the storage medium; the program instructions when executed perform the range extender control method of any of claims 1 to 7.
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